code: def testRegression(self):
      expected = numpy.load(
          join(
              filedir(),
              "tensorflowpredictmaest",
              "preds_maest_discogs-maest-30s-pw-1.npy",
          )
      )
  
      filename = join(testdata.audio_dir, "recorded", "techno_loop.wav")
      audio = MonoLoader(filename=filename, sampleRate=16000)()
  
      activations = self.model30s(audio)
      found = numpy.mean(activations, axis=0).squeeze()
  
      self.assertAlmostEqualVector(found, expected, 1e-3)
  
file_path: essentia/test/src/unittests/machinelearning/test_tensorflowpredictmaest.py
imports: from essentia_test import *
label_desc: Use image node_id 3 for calling the TestTensorFlowPredictMAEST obj's underlying member method code with example usage: obj.testRegression() without return types